منابع مشابه
Rapid Onset of Maternal Vocal Recognition in a Colonially Breeding Mammal, the Australian Sea Lion
BACKGROUND In many gregarious mammals, mothers and offspring have developed the abilities to recognise each other using acoustic signals. Such capacity may develop at different rates after birth/parturition, varying between species and between the participants, i.e., mothers and young. Differences in selective pressures between species, and between mothers and offspring, are likely to drive the...
متن کاملMultiple breeding females in captive groups of golden-headed lion tamarins (Leontopithecus chrysomelas): causes and consequences.
In Callitrichidae, reproduction in subordinate females is generally inhibited but occurs in rare cases, possibly in association with the presence of an unrelated male, important food resources or low dispersal opportunities. This study investigates the occurrence of groups with multiple breeding females in captive golden-headed lion tamarins (Leontopithecus chrysomelas), the factors leading to ...
متن کاملCosts and benefits of joining South American sea lion breeding groups: testing the assumptions of a model of female breeding dispersion
A recent cost–benefit model has been proposed (M.H. Cassini. 1999. Behav. Ecol. 10: 612–616; M.H. Cassini. 2000. Behav. Processes, 51: 93–99) to predict the dispersion of female mammals when breeding resources are distributed in fixed and predictable patches. The benefit of the model is a reduction in male harassment when females join breeding groups, and the cost is an increase in female–femal...
متن کاملIn Like a Lion:
The tornado that struck Milwaukee, WI on March 8, 2000 was the earliest on record. Unlike most tornadoes, this particular tornado was not associated with a supercell or any form of a mesocyclone. The author argues that a lake breeze circulation created a misocyclone in the region, which was elongated vertically by a rapidly deepening convective thunderstorm in the region, producing the tornado.
متن کاملCharacteristics of reproductive biology and proximate factors regulating seasonal breeding in captive golden-headed lion tamarins (Leontopithecus chrysomelas).
Reproduction is highly demanding in terms of energy expenditure, and the costs and benefits associated with postponing or investing in a reproductive effort are crucial determinants of an individual's fitness. Understanding the reproductive potential of a species under varying ecological conditions offers important insights into the dynamics of its social system. This study provides the first d...
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ژورنال
عنوان ژورنال: Science
سال: 1892
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.ns-20.493.34